Error code
None
Remote control:
1. Applicable model
All models
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Defective compressor
• Noise
Note:
RUN light TIMER light
Indoor
display
–
–
Green LED Red LED
Outdoor unit
control PCB
Stays OFF Stays OFF
5. Troubleshooting
Diagnosis
Are OK the
insulation resistance and
resistance between terminals (1) of
compressor?
(1)
1.044Ω or more at 20°C (Model FDC100VNX-W)
1.044Ω or more at 20°C (Model FDC100VSX-W)
YES
0.448Ω or more at 20°C (Model FDC100VNA-W)
1.044Ω or more at 20°C (Model FDC100VSA-W)
0.309Ω or more at 20°C (Model FDC200VSA-W)
0.724Ω or more at 20°C (Model FDC100VNP-W)
Is insulation
of respective harnesses OK?
Is any harness bitten between
pannel and casing
or etc?
YES
Check the outdoor unit grounding
wire/earth leakage breaker.
Check of the outdoor unit grounding wire/earth leakage breaker
Run an independent grounding wire from the grounding screw
①
of outdoor unit to the grounding terminal on the distribution
panel. (Do not connect to another grounding wire.)
In order to prevent malfunction of the earth leakage breaker
②
itself, confirm that it is conformed to higher harmonic
regulation.
*
Insulation resistance of compressor
• Immediately after installation or when the unit has been left
for long time without power source, the insulation resistance
may drop to a few MΩ because of refrigerant migrated in
the compressor.
When the earth breaker is activated at lower insulation
resistance, check the following points.
6 hours after power ON, check if the insulation resistance
①
recovers to normal.(Except for FDC100VNP-W)
When power ON, crankcase heater heat up compressor and
evaporate the refrigerant migrated in the compressor.
Check if the earth leakage breaker is conformed to higher
②
harmonic regulation or not.
Since the unit is equipped with inverter, it is necessary to use
components conformed to higher harmonic regulation in order
to prevent malfunction of earth leakage breaker.
75
-
Content
Earth leakage breaker activated
NO
NO
-
'22 • PAC-SM-422
Countermeasure
*
Replace compressor.
Secure insulation
resistance.